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Old Comments:

2010-08-19 20:04:11
Dallol in Ethiopia is a volcanic explosion crater. It was formed during a phreatic eruption in 1926, and numerous other similar craters dot the salt flats nearby. These craters are the lowest known subaerial volcanic vents in the world, at over 45 m (150 ft) below sea level. Source: Wikipedia Surlphur, potassium and othr minerals color the crater of Dallol Volcano. The crater explosion resulted in a strong hydrothermal activity since then. Source: giuseppedr @ flickr